Comment # 10 on bug 99335 from Ilia Mirkin

(In reply to Alexander from comment #9)
> Thanks. I have added the following to ~/.bashrc:
> export "LIBGL_ALWAYS_SOFTWARE=1"
> 
> Then I checked 'env' as advised:
> 
> # env | grep QSG
> QSG_RENDER_LOOP=basic

That's good.

> # env | grep LIBGL
> LIBGL_ALWAYS_SOFTWARE=1

That's bad. You don't want this.